<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1"/>
    <title>Bootstrap</title>
    <link rel="stylesheet" href="bootstrap.min.css"/>
    <style>
        body{
            padding-top: 50px;
        }
        .startr{
            padding: 40px 15px;
            text-align: center;
        }
    </style>
</head>
<body>
    <nav class="navbar navbar-inverse navbar-fixed-top" role="navigation">
        <div class="container">
            <div class="navbar-header">
                <a href="#" class="navbar-brand">Project Name</a>
            </div>
            <div id="navbar" class="collapse navbar-collapse">
                <ul class="nav navbar-nav">
                    <li class="active"><a href="#">Home</a></li>
                    <li><a href="#">about</a></li>
                    <li><a href="#">contact</a></li>
                </ul>
            </div>
        </div>
    </nav>
    <div class="container">
       <div class="startr">
           <h1>hello</h1>
        <p class="lead">hello world!</p>
       </div>
    </div>
</body>
</html>